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Allis Chalmers Discussion Forum
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A.C. wd45 hydraulic issue....

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ballard304

09-22-2015 09:29:42




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My hydraulics will lift and hold, but will not release and go down. Was slow coming on but is now complete. Is there a rebuild kit or something I can get? Am ordering a repair manual but the tractor has basically three parts to the hydraulics and Im not sure which one needs it. Any help will be very appreciated. :(




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hd6gtom

09-23-2015 06:11:56




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 Re: A.C. wd45 hydraulic issue.... in reply to ballard304, 09-22-2015 09:29:42  
that happened to a pal of mine he took it to the dealer, they told him a spring inside the pump was broken and would not let the pump stop pumping.



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DrAllis

09-22-2015 14:28:20




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 Re: A.C. wd45 hydraulic issue.... in reply to ballard304, 09-22-2015 09:29:42  
Pay particular attention to the linkage under the belly that comes from the drawbar spring. If that linkage is damaged/broken/maladjusted, the pump will pump continuously and never lower the load. Screw "A" should be threaded into the divot on the pump body side to shut off the pump.



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Ralphwd45

09-22-2015 13:02:58




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 Re: A.C. wd45 hydraulic issue.... in reply to ballard304, 09-22-2015 09:29:42  
On the battery box, there should be instructions, for setting your hydraulics controls. If not then most manuals have a picture, with instructions in them. The WD shares the same instructions, as the WD45.



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EricB

09-22-2015 10:40:04




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 Re: A.C. wd45 hydraulic issue.... in reply to ballard304, 09-22-2015 09:29:42  
Take a really close look at the control levers on the pump itself. Move the control by the steering wheel in both directions to see what is supposed to manage up and down function. You may likely just need to make an adjustment or tighten a set screw on one of the rods. If it lifts well there is nothing wrong with the pump in terms of hydraulic function. When you go to let it down you're simply letting the oil out of the cylinders.

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old

09-22-2015 10:34:23




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 Re: A.C. wd45 hydraulic issue.... in reply to ballard304, 09-22-2015 09:29:42  
Check the linkage and make sure every thing it moving as it should be. Also there is thumb knob on the hyds and if that has some how gotten closed it can cause odd problem with the hyds



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